Look foe railroad switches



(No Model.) 3 Sheets-Sheet 1. P. L. .PETTENGILL, LOOK FOR RAILROAD SWITCHES.

' No. 308,278. Patented Nov. 1, 188 4.- x I A m l g WITNEQSES INVENTOR.

ATTORNEYS.

y 42:1 W Y N. PETERS. Phnlbulhognphnr, Washington. I)v C V (No Model.) I s Sheets.-Sheet 2. P. L. PETTENGILL. LOGK FOR RAILROAD SWITO No. 308,278. Pate Nov. 18,1884.

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P. L. PETTENGILL- LOOK FOR RAILROAD SWITCHES.

No. 808,278. Patented Nov. 18. 1884.

' f 1% WITNESSES: INVENTO X ATTORNEYS.

N. PETERS. Phawmho n har, Washington. 0.0.

1 time gTATES ArnNr rrien.

PHILANDER L. PETTENGILL, OF ELMIRA, NEYV YORK.

LOOK FOR RAILROAD-SWITCHES.

SPECIFICATION forming part of Letters Patent No. 308,278, dated November 18, 1884.

Application filed March 15, 1884. (No model.)

To aZZ whom it may concern:

Be it known that I, PHILANDER L. PET- rENeILL, a citizen of the United States, and a resident of Elmira, in the county of Cheniung and State of New York, have invented certain new and useful Improvements in Locks for Railroad-Switches; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in which- Figure 1 is a side view of the lever of a railroad-switch provided with my improved lock,

showing the lever in full lines in one position and in dotted lines in its other position. Fig. 2 is a horizontal section on line xx, Figs.

1 and 3. Fig. 3 is a vertical section on line 3 y, Fig. 2. Figs. 4 and 5 are cross sections on lines a s and 'v 12, Figs. 1 and 2. Figs. 6 and 6 are perspective detail views of the outer end of the lever and of the securinghook and its guard upon the base. Fig. 7 is aview of the key, and Fig. 8 is a perspective view of a railroad-switch in which the lever is provided with my improved lock.

Similar letters of reference indicate corresponding parts in all the figures.

My invention has relation to locks for railroad-switch levers adapted to be locked in their two different positions when the switch is opened or closed; and it consists in the improved construction and combination of parts of the same, as hereinafter more fully described and claimed.

In the accompanying drawings, the letter A indicates the base upon which the lever is pivoted in a bearing. R; andB is the switchlever, which is adapted to be swung to either side, resting with its edges upon the base, and which may be provided with a handle, P. Upon one side of the lever, near its outer end, is secured a casing, 0, having two slots, D D, in the upper and lower side piece of the easing-one near the outer end of the same and the other near the inner endadapted to receive and admit into the casing two lugs, E E, secured upon the base, one upon each side of the fulcrum of the lever. These lugs are upright and provided at their upper ends with in ward] y-proj ecting hooks or shoulders F, and two upright guide-lugs, G G, are secured upon the base by the sides of the shouldered lugs, adapted to bear against the outer side of the casing when the shouldered lugs or catches E are inserted into the casing. Two shouldered pairs of bolts, H H, are pivoted at their ends in the casing, immediately inside the inner ends of the slots, having their free ends sliding in guide-grooves I in the upper and lower side pieces of the casing, and are adapted to catch under the shoulders of the lugs or catches, and two pairs of springs, J J, bear with their free ends against the inner sides of the free ends of the bolts, forcing them outward, having their inner ends secured to the ends'of a cross-piece, K, in the middle of the lock-easing. The ends of the lock-casing have two transverse slots, L L, entering the casing at the free ends of the shouldered bolts, and two pins, M M, passing through the upper and lower side pieces of the casing, divide the entrance of these slots. The key N has a bifurcated end, the ends entering one upon each side of the dividingpin in the slots or key-holes, and by pressing the key into the key-hole the bifurcated ends of the same will force the free ends of the pair of pivoted bolts back, releasing the shouldered catch, allowing the lever to be turned. \Vhen swung over to the other side of the fulcrum, the lug E up on that side will enter the slot upon the otherside of the casing, the guide-lug G guiding the lever, holding the lever in that position until the lock is unlocked by introducing the key into the other key-hole. A casing, 0, open at its ends, slides upon the lock-casing, the lever being cut slightly away,.as shown at B, to accommodate the same, and is as much shorter than the loclceasing as the distance from the end of the lock-casing to the inner end of the catch-receiving slot D; and it will 'be seen that when the lock casing is placed upon the catch the sliding easing will cover the other catch-receiving slot, preventing dirt or ice or snow from entering into the casing.

It will be seen that by having the pivoted bolts in pairs and by dividing the entranceslots or key-holes by means of the dividingpins the bolts can only be operated by a bifurcated key of the exact proportions, rendering it impossible for persons not concerned to tamper with the lock and switch.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States 1. The combination of a switch-lever, two catch-lugs projecting upward from the base plate of the lever, one upon each side of the fulcrum of the same, a lockcasing having slots in its sides adapted to fit over the catchlugs, and means for engaging said lugs, and a casing sliding upon the lock-casing and covering the slot at the time i'acing upward, as and for the purpose shown and set forth.

2. The combination of a-switch-lever, a lock-casing secured upon the end of the same, having slots in its sides at the opposite ends of the same, and having lockbolts inside the said slots, two catch-lugs projecting upward from the base-plate of the lever, one upon each side of the fulcrum of the same, and adapted to enter and be held in the slots of the casing by the lock bolts, guide lugs projecting from the base parallel with the catch-lugs adapted to bear against the outer side of the loclccasing, and a sliding casing as much shorter than the lock-casing as the distance from the inner end of one of the slots to the nearest end of the lock-casing, as and for the purpose shown and set forth.

3. The combination, in a lock for railroad switch levers, of the casing having slots upon opposite sides, near the opposite ends of the same, and having transverse key holes or slots in the opposite ends, near the sides opposite to the slots, provided with dividing -lugs, as described, two pairs of shouldered bolts pivoted at their ends at the inner ends of the slots, and bearing with the rear sides of their free ends against the ends of two pairs of springs, a key having bifurcated end, and catch-lugs secured upon the base of the switch, each having an inwardly-projecting shoulder upon its upper end, adapted to engage one of the shouldered bolts, as and for the purpose shown and set forth.

In testimony that I claim the foregoing as my own I have hereunto affixed my signature in presence of two witnesses.

PHILANDER L. PETTEN GILL.

W itn csses:

HEZEKIAH D. ILcoX, PHINEAS Hnnons. 

